Unformatted text preview: Ecdyzoa protostomes. 1. Necator americanus are cosmopolitan ( widely distributed) hookworms found in the Americas that feed on host blood. 1. River blindness is caused by Onchocerca volvulus and transmitted by black flies . 2. Water bears can be found in the water film around mosses and lichens . 3. Metabolic water is a by-product of metabolism, specifically from oxidation which is also called hydrolysis , a chemical reaction where oxygen is added and water is produced....
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- Spring '08
- Annelid, Nematodes, Phylum Mollusca, sedentary filter feeders